Specialist can stun lot with new presentation (10)

I believe the answer is:

consultant

I'm a little stuck... Click here to teach me more about this clue!

'specialist' is the definition.
(medical specialist)

'can stun lot with new presentation' is the wordplay.
'can stun lot' can be anagrammed to 'CONSULTANT'.
But, I am not sure how this is indicated.

Can you help me to learn more?

(Other definitions for consultant that I've seen before include "Senior hospital doctor" , "Adviser" , "See 1 across" , "Specialist" .)

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